Ehregott theodore winkler



'(No Model.)

E. T. WINKLER. CONDENSER COIL FOR IGE MAKING MACHINES. v

' Patented May 19, 1891.

A TTOR/VEV l 11 n H M WITNESSES:

UNITED STATES EHREGOTT THEODORE WINKLER, OF PHILADELPHIA, PENNSYLVANIAASSIGNOR, BY MESNE ASSIGNMENTS, TO THE AMERICAN ICE MACHINE COMPANY.

CONDENSER-COIL FOR ICE-MAKING MACHINES.

SPECIFICATION forming part of Letters Patent No. 452,535, dated May 19,1891. I

- Application filed September 20, 1887- Serial No. 250,219. (No model.)

is provided with coils connected in the system in such manner as tofreely allow them to expand or'contract as the variation of temperaturein the machine may require. In this class of apparatus the use ofcouplingsLs, Ts, nipples, and unionsis avoided as far as can be, as theexpansion and contraction will cause them to leak. 'To dispense with asmany of these joints as possible, it is customary to use wheneverpossible a pipe of suflicient length and bent in the desired form toconnect the two points. In bending pipes, as well known, a greatdifficulty is experienced in getting the end of the pipe to registerwith the coupling or other opening that it is to enter,-so that thescrew-threads of the pipe will not cross'the screw-threads of thecoupling or other opening, as such opening not only destroys the thread,but makes an unsafe as well= asa leaky joint. This is particularly thecase with valves, as they have two or more openings which no ust beconnected with pipes often placed at different angles, and one of whichis subject to expansion and the other to contraction, as is the casewith the valve at the outlet end of a condenser or the inlet end of anevaporator. To avoid this objection, the

pipe to be connected to the valve'is screwedinto a gland having its borescrew-threaded to correspond with the screw-thread in the pipe and itsoutside smooth or without screwthreads and entering a non-screwthreadedopening or box in said valve, which entrance is easily accomplished, asno centering to prevent screw-threads from crossing is necessary.

Another defect of this class of apparatusis the gumming or clogging ofthe valves, due to the collection of dirt, oil, and iron scalings fromthe metallic pipes getting in the space between the plug-seats and plugwhen the latter has been set for admitting a proper supply to theinlet-pipe. This accumulation of material ultimately fills the reducedopening through which the fluid escapes from the valve into theexpansion pipe or coil and finally clogs the pipes back of it. To cleanthe valves and pipes, it has heretofore been necessary to remove thevalve and pipe from their other attachments, then blow or otherwiseclean them, and then replace them in the circuit. This is remedied in mydevice by forming on the end of the plug a plunger of less diameter andof greater length than the reduced opening inthe valve, so that when theplug is seated the end of the plunger projects beyond the lower end ofthe reduced opening and will have punched a hole through any clog thatmay have formed in the reduced opening. Furthermore, the plug can beraised above the horizontal opening, so that the full forceof the fluidcan be driven through the valve not only to clean the latter, but toclean-the coils as well.

My invention accordingly consists of constructions and combinations, allas will hereinafter be set forth in the specification and pointed out inthe. claim.

Reference being had to the accompanying drawings, Figure '1 represents atransverse section, partly in elevation, of a condenser, showing a coiland its cut-off valve embodying'my invention; and Fig. 2 is a sideelevation of same, drawn to a small scale.

A represents the condenser, comprising the usual water-tank B and asystem of coils of pipe C in said tank, and D is the common supply-pipefor the coils C. Each coil C is a separate coil, and is either composedof a single-piece of tubing or of sections Welded together, so as to beWithout screw or other like joints. One end 0 of each coil is connectedto pipe D, as shown, in the usual manner, and the other end 0' passesout of the tank "B'through a stuffing-box b and screws into the smoothor unthreaded gland e for a correspondingly-formed stuffing-box c on thecut-off-valve casing 6 This gland e is loosely mounted upon bolts 6having nuts e on their outer ends to retain the gland in position and toadmit of regulating or adjusting the density of the packing in thestuffing-box. As the gland e is loosely supported upon bolts c and theend 0 of the coil is screwed into the gland, it and the end 0 arecapable of a simultaneous lengthwise movement to compensate for theexpansion and contraction of the coil. This movement, however, isslight, for the reason that as the coil is practically in a single pieceor without screw-coupling joints its component parts or winds are freeto expand independently. Hence the resultant expansion and contractionare small, and this, as before stated, is compensated for by themovement of the end 0 of the coil and gland a. By screwing the coil end0' to the gland e of the stufiing-box e the valve E is firmly supportedupon the pipe end 0', either in a vertical, angular, or other position,without necessitating additional support, which is a desirable featurein setting up the condenser-coils and making pipe connections with theircut-off valves E.

The ease with which the smooth-surfaced gland can be inserted in thevalve-openingis a great advantage over the old form, wherein thescrew-threaded end of a pipe had to be centered to properly engage withthe screwthreaded opening of a valve.

The valve E is preferably composed of an elongated tubular casing 6having a screwstem 6 for the plug 6, a stuffing-box c at the top forsaid stem, a seat a for plug 6, and a bottom stufiing-box c having agland e, loosely supported upon bolts e ,in a manner as above describedfor gland e.

In gland e is screwed the pipe f, leading to the ex pansion-eoils. (Notshown in the drawings.) \Vhen the pipefis the end of an expansion-coilor leads thereto, it is of alarger diameter than that of coil end 0, andthe stuffing box c for pipe f is correspond ingly larger than thestuffing-box e for coil end 0. As both of these boxes have the slidingglands, the expansion and contraction of the condenser coils and ot' thepipes f, whether they are the ends of the expansioncoils or otherwise,are compensated for in the eut-off-valve stuffing-boxes, and theconstruction of these boxes or their glands admit of readily erecting orsetting up the coils and of disconnecting them whenever it is desirableto do so. The plug 6 is conical in form and terminates in a stem orplunger g, which is of a smaller diameter than that of the bore of acorrespondingly-shaped opening 6", leadin g from the conically-shapedseat c for plug 6*. The plunger 9 is also longer than the passage e", sothat when the plug is seated the end of the plunger extends beyond thepassage. The plug 0 can also be raised without. removing thestem-packing and gland to a point above the inlet-opening e of thevalve, which will then have free communication by way of plug. Theinlet-opening e" of valve E communicates by way of plugseat opening withthe contracted opening 0', which is the outlet of the valve. The plungeror necdle g, sliding or moving in the outlet-opening 6" as the valve isopened and closed, cleans it of any dirt or debris tending to collecttherein and keeps it always open, so that the valve cannot clog up. Byopening valve E to its full extent the pressure in the condenser-coildrives any dirt therein through the valve into the larger or expansionpipe, and after such cleansing the plunger g, when the valve E isclosed, pushes out any dirt lodging in the outlet 6", so that when nextopened the way through the valve is open or clean. This cleansing is, itwill be noted, effected without removing the valve from the pipes corfand without disconnecting one coil from another. Hence anv one coilmay at any time be blown or cleaned out by the pressure in the condenserwithout disturbing the flow through the other coils. The screw part ofthe stem 0 of the valve E is made larger in diameter than that of thestem itself, and the opening in the valve-casing therefore is of acorresponding size and has ashoulder a" near the top of the casing, uponwhich rests a loose washer or plate It, through which the stem 6 passes.This washer forms the bottom or end of the stoning-box e, the gland etherefor being smooth or unthreaded, and is provided with or inclosed bya screw-cap e which screws to the outside of the casing (2 By uncouplingthe cap e and raising the stem c the upper end of the screw part of thestem abuts against washer 71 to remove or raise it, the packing aboveit, and the gland 6 out of the casing for replacement of any of saidparts for access to its valve or for other puroses.

The stuffing-boxes b for the coils c prevent escape of water or liquidfrom tank 15. I do not herein limit myself to the details ofconstruction of the parts above described except when specificallyclaimed, as it is evident that the same may be varied without departingfrom the spirit of my invention.

\Vhat I claim is- In the circuit of an ice-making or refrigeratingapparatus, a valve having the outlet and inlet openings at angles toeach other and the latter provided with a plug-seat, and said plughaving a plunger of greater length than that part of the opening belowthe plugseat.

In testimony whereof I affix my signature in presence of two witnesses.

E. THEODORE VINKLER.

Witnesses:

JOHN RODGERS, S. J. VAN STAVOREN.

Ice

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